Add Since tags to recently introduced test function typedefs.
https://bugzilla.gnome.org/show_bug.cgi?id=649506
* @fixture will be a pointer to the area of memory allocated by the
* test framework, of the size requested. If the requested size was
* zero then @fixture will be equal to @user_data.
- **/
+ *
+ * Since: 2.28
+ */
void
g_test_add_vtable (const char *testpath,
gsize data_size,
* GTestFunc:
*
* The type used for test case functions.
- **/
+ *
+ * Since: 2.28
+ */
+
/**
* g_test_add_func:
* @testpath: Slash-separated test case path name for the test.
*
* The type used for test case functions that take an extra pointer
* argument.
- **/
+ *
+ * Since: 2.28
+ */
+
/**
* g_test_add_data_func:
* @testpath: Slash-separated test case path name for the test.